See your CdA in real-time! The GiBLI Aero Sensor Review
ฝัง
- เผยแพร่เมื่อ 28 ก.ค. 2024
- bit.ly/GiBLIsensor - GiBLI official site & shop
Traditionally "aero" was something invisible to mere mortals. The big brands had access to wind tunnels, and every brand claimed to have the fastest bike or the fastest wheels. With the GiBLI aero sensor, the potential to really understand aerodynamics is here.
I can see lots of parallels between this tech now and power meters in the early days of the tech. Just like a power meter, simply buying this won't make you quicker. But learning to analyze it's data, and work with it will make you a faster cyclist. At least, that's the theory. Let's see how it stands up to it.
Link: giblitech.com/?sca_ref=640308...
Timestamps:
00:00 Intro
00:20 What is it?
01:02 What is CdA?
01:43 Full Disclosure
02:13 What can it do?
04:10 Power meter analogy
05:10 Pros & Cons
08:42 Should you get one? - วิทยาศาสตร์และเทคโนโลยี
It's honestly BONKERS that this kind of kit is now a consumer item for the average geezer... I NEED ONE 😬😬😬
I'm sure you'll be the first to get the 60 quid AliExpress version... 🙌
@@ChinaCycling 🤣🤣🤣
That is brilliant tool to justify even more spend for various components 😊
You can do the same with just a powermeter and preferably a wheel speed sensor. It’s called the Chung’s method. It does not take wind into account and and you need to estimate air density yourself using air temperature and pressure from, e.g, a weather service. Silca made a video about it called ”Aero testing expert explains how to get accurate aero testing at home”.
I think that device just mesures the wind, air temperature and pressure and then applies similar calculations.
I've done the chung method in golden cheetah for years. It has so many flaws that people don't talk about. Go do laps of a park or something for an hour... then go check the recorded altitude when you start vs when you finish. It will change. Thats with a Garmin 1040, which should be pretty accurate. This variation of altitude effects the results so much. The GiBLI isn't perfect, but more data = more accuracy imho. (but also bearing in mind poop in = poop out.)
@@ChinaCycling yes I fully agree with you. I think that the Chung's method needs very careful test methods and setup to be accurate. Having this kind of sensor likely makes it a lot easier to conduct tests in the real world.
There's no way an estimate can even approach the accuracy of this technology. I won't debate that the cost is lower, but that not really what we're thinking about here. This is really a performance item at another level.
You could go out without any tech and just ride around for free and see what's faster if you aren't really serious.
@viljamip the Chung Method is a total pain...it works if it's your only option but this is very easy very anyone
@@ChinaCyclingguessing that's why you could use the Chung method in the Catesby tunnel is Northampton then? Constant air pressure and density, with a constant altitude and a very accurately known distance.
can I use it in the bedroom?
It's only accurate for bicycle speeds... Your wife says you always come too fast in the bedroom...
😂😂😂 Duuuuuude….
CdA is not the coefficient of aerodynamic drag. Is the drag coefficient (Cd) times frontal area (A).
This is what happens when you let ChatGPT write parts of your script... Fraking toasters.
@Caffeinatedtechnerd The way you say it's not Cd, but Dc.... Can you correct yourself, otherwise it doesn't look so right again?
Use some fiber grip to prevent the gopro mount from drooping.
If it is below 100 grams no problems. I ride with a Spesh Flux light which is like half a kilo-no worries
what are the differents with Notio Aerometer?
Joe, from a marketing perspective a dedicated area of your shop toward products you have personally tested as being faster might get interest.
Yup, but it's also a bit of a can of worms. What's faster for me / on my bike may not be faster for everyone... But, I'll try to include aero data with any reviews..
@@ChinaCycling that a good point I forgot. Sometimes the strangest seeming changes can make a big aero difference and it’s highly specific too.
send this over to Jesse and Norcal and now we talking!
Top Gun, yeah😎
Hopefully its better than the powerpod from velocomp which was a piece of garbage (to be fair, the first one, they seem to be on v5 now)
Yeah, it seems there's quite a few companies doing this stuff these days...
The GiBLI is the real deal, I’ve been using one to get myself and other athletes faster for TT and Triathlon…we’ve been getting really tight and reproducible data…free watts!
Cool 🖖🇬🇧
Live long and prosper.
Great video, Joe & China Cycling.
Thanks for watching ;)
For the price I’d rather marry!😂
Isn't this a copy of an aeropod?
You mounted wrong. You need to have it leveled flat
The pitot is flat, the app even has a "spirit level" function that tells you the angle.
I see, Studio Ghibli is now expanding to aerodynamics.
Oh, it's Gibli
It’s only ‘bro science’ if you don’t understand the variability
I call it bro science because most people only do one run on each setup. Like I said, if you do >10 runs on each and you can see a trend... go for it.
There's no way a pitot tibe mounted in front of the rider can estimate much less measure aero frontal and multiangle resistance or laminar flow disturbance of the rider and bike BEHIND the sensor ... until proven otherwise.
I contacted the company to see how they did this and got the answer that the sensor system doesn't in fact "know" or estimate these factors.
so, basically, it's a verry pricey airspeed sensor being advertised as a portable windtunnel.
prove it. No physics ...no buy in.
This is an overpriced, overpromising airspeed sensor ... full stop.
I have no vested interest to defend it... but, my $0.02: It knows your power, it knows your speed, it knows the road gradient, it knows the air density, it takes Crr as a constant, it knows what the wind is doing... so it can work out your aero drag. If the same power, same wind, etc... but suddenly the rider gets slower; it must be an increase in aero drag.
with a power meter and computer I know my power and speed. With an elevation profile of the route (free) I know the grade and, in fact, would have a power profile of the ride for my planned pace (also free). Any deviation from that power/speed profile would be mechanical or wind. The ONLY solutions would be to check tire pressure or improve my tuck. Right? Free. no 1200 CAD pitot tube
Chung's method is better this is rubbish
I've used the Chung method before. It's fine, but it has it's limits. I was using a Garmin Edge 1040 (pretty respectable head unit) and doing laps of a loop... however, the Garmin was recording each lap as getting slightly lower and lower in altitude (I'm guessing air pressure was rising or something, confusing the barometer.) therefore Golden Cheetah thinks you're actually riding down a false flat, messing with the results. Wouldn't happen with the GiBLI as it has it's own environmental sensors.
Funny 3D printed prototype with ugly machined surface...please no prototypes!
Is it 3d printed or machined?🤡